Air cooling device



Feb. 18, 1936. H, IHARD|N 2,@31l,5341- AIR' COOLING DEVICE Filed NOV. 5, 1951 2 Sheets-Sheet l Feb. 18, 1936. R. H. HARDIN 2,031,534

AIR COOLING DEVICE Filed Nov. 5, 1951 2 Sheets-Sheet 2 Patented Feb. 18, 1936 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to air cooling devices, and more particularly to air cooling devices designed primarily for use in cooling the air in public buildings, schools, hotels or .the like, and aims to improve generally the construction as shown in my Patent Number 1,782,612, dated April '7, 1930. 7

An important object of the invention isthe provision of an air cooling device of the type wherein the water used in changing the temperature of the air blown through the device, is circulated through the body portion of the device and returned to a tank located at the base of the body portion of the device.

A. still further object of the invention is to provide means for transforming the water into fine sprays prior to the passage of air through the device, means being provided for preventing the air passing through the body portion of the device, carrying excessive water from the device.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings:

Figure 1 is a side elevational View of an air cooling device constructed in accordance with the invention.

Figure 2 is a vertical sectional view through the body portion of the device, taken on line 22 of Figure 1.

Figure 3 is a transverse sectional view through the body portion or tank of the device, portions of the partitions being broken away.

Figure 4 is a vertical sectional view through the horizontal partition and one of the vertical tubes, connected therewith.

Referring to the drawings in detail, the device comprises a body portion indicated generally by the reference character 5, the body portion being in the form of a tank, and designed to provide an upper compartment 6, having an open discharge end, lower compartment I and an intermediate compartment 8, the compartments being in communication for purposes to be hereinafter more fully described.

The bottom of the lower compartment is inclined and formed with an offset portion 9 pro- 55 viding a water chamber, into which the water drains, after it has passed through the several compartments of the body portion.

As shown, apump is supported near the base of the body portion, andcommunicates with the offset portion of the tank ,9, through the pipe I I. Communicating with the pump housing of the pump I0, is a pipe I2 that extends upwardly, and connects with the body portion 5 at the top thereof, so that water from the offset portion or tank 9, may be pumped through the pipe I2 and discharged at a point substantially centrally of the upper compartment.

The upper compartment comprises a horizontal partition I3 spaced from the top thereof, providing a water chamber, the partition I3 being provided with a plurality of openings that communicate with the tubes I4, which tubes are supported in spaced relation with each other and disposed at oblique angles with respect to the ends of the body portion.

It might be further stated that these tubes I4 are vertical tubes transversely elongated, so that wide surfaces are provided against which air is directed.

Supported at one end of the body portion and communicating therewith, is a blower I5 that blows air against the side faces of the tubes I4.

These tubes I4 discharge water into the compartment 8 from where the water passes through the openings of the partition I6, from where the water passes into the lower compartment 1.

Arranged within the lower compartment 1, are rows of baffles [1 that have inwardly extended flanges l8 formed along one of their respective edges, the baffles being supported in transverse spaced relation with each other, and. held in position by means of supporting bars I9, that extend across the body portion.

These baflies are also disposed at oblique angles with respect to the ends of the body portion, to deflect the air and water and at the same time prevent the air from blowing excessive water from the body portion.

As clearly shown by the drawings, two rows of these baffles, are provided near one end of the body portion, the bafiies of the rows being inclined in opposite directions to cause the air to take an irregular path through the body portion.

Water is sprayed into the lower compartment I, by means of the spray head 2|], that is in communication with the pipe I2, through the pipe 2|, with the result that water from the offset portion or water chamber 9, will be forced into the spray head 20 and discharged in a fine spray,

within the lower compartment, between the rows of bafiles at the ends of the body portion.

The reference character 22 designates the intake pipe of the device, which intake pipe is provided with an enlarged portion 23 that communicates with the lower compartment of the body portion. At the opposite side of the body portion and communicating with the lower compartment 1, is a pipe 24 that leads to the fan housing 25 in which a fan is mounted for creating a suction through the lower compartment, drawing the air of atmospheric temperature through the lower compartment which contacts with the water sprayed into the lower compartment, through the nozzle as well as the water passing into the lower compartment through the openings of the partition Hi, the water moving through the path of travel of the air.

Air passes from the fan housing 25, and is exhausted through the pipe 26.

The motor forming the power element of the device is indicated by the reference character 21, and as shown the shaft of the motor is connected with the link 28, through the arm 29, the link 28 being connected with one end of the rod 30 that is pivo'tally mounted at 3|.

The upper end of the arm 30 is provided with a rack bar 32 that meshes with the teeth of the gear 33 mounted at one end of the blower shaft, with the result that when the arm 29 is rotated,

the rod 30 will be rocked, rotating the blower.

A suitable pulley is provided on the blower shaft, over which pulley the belt 34 operates, the belt moving over the pulley mounted on the pump shaft of the pump ID, to rotate the pump.

A belt 35 connects with a pulley of the blower shaft and also operates over a pulley disposed on the shaft of the fan operating in the housing 25, so that rotary movement is transmitted to the fan.

The motor 21 is set in operation which indirectly transmits movement to the pump 10. The pump l0 forces the water through pipes l2 and 2|, the water passing through pipe 2| being discharged through the spray head 20 in a fine spray, into the lower compartment. Water flowing through pipe I2 is discharged into the upper compartment from where the water flows through the tubes l4 and is discharged onto the partition I B, from where the water passes into the lower compartment 1 in fine drops.

The water entering the lower compartment through the spray head and through the openings of the partition I6 is subjected to the action of air entering the lower compartment through the pipe 22, the air being of atmospheric temperature. The air is drawn through the lower compartment by the fan 25, and is exhausted through the pipe 26. It is obvious as the warm air contacts with the water in the lower compartment, evaporation is set up resulting in a reduction of the temperature of the water which is carried through pipe I 2 and disposed within the upper compartment where it flows into the tubes M. The tubes being cooled by the water passing therethrough, the air is cooled by being blown against the tubes and through the upper compartment by the blower I4.

I claim:

An apparatus for the treatment of air, comprising a body portion including upper and lower compartments, spaced vertical water tubes within the upper compartment, a spray head in the lower compartment, a pump, a pipe establishing communication between the pump and upper compartment, said pump adapted to draw water from the lower compartment and force the water through the pipe to the water tubes, said pump also forcing a portion of the water through the spray head, means for drawing air of atmospheric temperature through the water passing from the spray head, setting up rapid evaporation with the lower compartment lowering the temperature of the water delivered to the tubes, cooling the tubes, and means for forcing air to be cooled against the tubes.

ROBERT H. HARDIN. 

